	Authors	Year	Title
	Chlupac & Turek	1983	Devonian goniatites from the Barrandian area, Czechoslovakia. Rozpravy Ustredniho ustavu geologického, 46: 1-159, fig.1-30, pl.1-32; Praha.
	Dahmer	1939	Die Cephalopoden des Oberharzer Kahleberg-Sandsteins (Unter-Devon). Senckenbergiana, 21: 338-356, fig.1-11; Frankfurt a.M.